Index Catalog // ScholarsArchive@OSU

Farmer perspectives on success and challenges : a study of small farms in Oregon's Willamette Valley

Creator:: Pool, Kristin E.
Abstract:: This thesis investigates the success of and challenges facing small farmers operating direct marketing farm businesses in Oregon's Willamette Valley. This qualitative study utilizes participatory methods to gain the unique perspectives of small farmers regarding their success and challenges. Small farms are important players in local food systems and ensuring...
Resource Type:: Masters Thesis
Full Text:: . Pool for the degree of Master of Science in Horticulture presented on December 9, 2014 Title: Farmer

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Creator:: Matty, Ethan P.
Abstract:: This work compares the condensation heat transfer and pressure drop for zeotropic refrigerant R-454C and its individual components, R-32 and R-1234yf, in horizontal microfin tubes. One microfin tube has a 4 mm outer diameter, 0.18 mm wall thickness, and a surface area ratio of 1.56. The second tube has a...
Resource Type:: Masters Thesis
Full Text:: a Zeotropic Mixture, R-454C, and its Individual Components, R-1234yf and R-32, in Microfin Tubes

Characterizing the neutron spectra in various irradiation facilities within the Oregon State University TRIGA ® Reactor

Creator:: Ashbaker, Eric
Abstract:: The Oregon State University TRIGA® Reactor (OSTR) has a number of irradiation facilities providing a wide range of neutron energies and fluxes. These facilities include a pneumatic transfer tube, a rotating rack, a thermal column, four beam ports, in-core irradiation tubes, a clyogenic gas transfer system and a large vault...
Resource Type:: Masters Thesis
Full Text:: -cooled, swimming pool type research reactor that uses uranium/zirconium hydride fuel elements that are

A characterization of seasonal pools in Central Oregon's high desert

Creator:: Dlugolecki, Laura
Abstract:: Seasonal wetlands in arid and semi-arid lands provide an important source of surface water in otherwise dry lands. Central Oregon's high desert, located in the Northern Great Basin (NGB) is dotted with hundreds of seasonal pools, locally called playas. The playas hold water or snow during parts of winter and...
Resource Type:: Masters Thesis
Full Text:: seasonal pool hydrology, especially in the NGB, are poorly understood and have not been thoroughly

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

Creator:: VerWey, Brian J.
Abstract:: Deep mixing events in the ocean’s surface layer act as physical drivers of carbon export by detraining dissolved and particulate organic matter, including surface phytoplankton communities, to depth. Once removed from the sunlit surface ocean environment, phytoplankton accumulation rates are dependent on the relative contributions of loss processes, such as...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Jason R. Graff

Dam removals and downstream bar-pool morphology

Creator:: Zunka, John Page Purnell
Abstract:: Bar-pool morphology in rivers can provide vital habitat to aquatic species, notably salmonids, which require gravel riffles to bury eggs and pools for hydraulic and cold-water refuge. In some cases, the erosion and subsequent deposition of coarse sediment downstream of a dam removal can modify habitat by inundating bar-pool structure,...
Resource Type:: Masters Thesis
Full Text:: curve at high r* if bar-pool morphology is maintained (Figure 3A). This might be reasonable if the

Development of baseline data on Oregon's high desert vernal pools

Creator:: Wyland, Sara Alice
Abstract:: Vernal pools are ephemeral surface water wetlands with unique hydrology, ecology and species composition. Rare and endemic species rely on vernal pool habitat due to specialization traits the species possess because they are adapted to the extreme conditions. Many vernal pool basins have been topographically and hydrologically altered and are...
Resource Type:: Masters Thesis
Full Text:: species composition. Rare and endemic species rely on vernal pool habitat due to specialization traits

High-resolution sampling of particulate organic carbon in a coastal upwelling system

Creator:: Holser, Rachel R.
Abstract:: Summertime, wind-driven upwelling off the Oregon coast delivers nutrient rich water to the surface that fuels the autotrophic production of particulate organic carbon (POC). This POC can be transported horizontally by fluid motions and vertically by sinking to the bottom where it can be entrained in the benthic boundary layer...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Rachel R. Holser

Sources of Soil Carbon Loss from Soil Density Fractionation: Soluble Pools or Methodology?

Creator:: Gordon, Ester K.
Abstract:: Soil is the largest terrestrial store of carbon (C) making it a critical component of the global C cycle. To model global carbon budgets more accurately we need to understand dynamics and turnover of the many different functional soil C pools that exist in soil. Many different methods are used...
Resource Type:: Masters Thesis
Full Text:: SOC after SDF an artifact of laboratory techniques, or do these losses represent a real pool of

Visualization and analysis of sensor data for detecting microclimate cold air pools

Creator:: Singh, Satpreet Harcharan
Abstract:: Cold air pools are spatiotemporal phenomena that occur when cold air from higher elevations roll down the slope to accumulate in lower elevations. Behaviors like this lead to microclimate anomalies such as the city of Corvallis (Oregon) experiencing persistent cold weather even on a sunny day. We analyze multivariate temperature...
Resource Type:: Masters Thesis
Full Text:: spline basis using the R package fda [20

ScholarsArchive@OSU

Farmer perspectives on success and challenges : a study of small farms in Oregon's Willamette Valley

Condensation of a zeotropic mixture, R-454C, and its individual components, R-1234yf and R-32, in microfin tubes

Characterizing the neutron spectra in various irradiation facilities within the Oregon State University TRIGA ® Reactor

A characterization of seasonal pools in Central Oregon's high desert

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

Dam removals and downstream bar-pool morphology

Development of baseline data on Oregon's high desert vernal pools

High-resolution sampling of particulate organic carbon in a coastal upwelling system

Sources of Soil Carbon Loss from Soil Density Fractionation: Soluble Pools or Methodology?

Visualization and analysis of sensor data for detecting microclimate cold air pools

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